El lun., 14 oct. 2019 a las 5:23, Pierce Ng (<pierce@samadhiweb.com>) escribió:
On Mon, Oct 14, 2019 at 04:07:49AM -0300, Hernán Morales Durand wrote:
Because I am lazy and want to avoid searching through all DockerHub repository pages... Do you know a Dockerfile to generate the smallest possible docker image for Pharo? Anyone could make it work Pharo on Alpine since it uses different libc?
Hi Hernán,
Please see following links:
- https://github.com/pharo-contributions/Docker-Alpine - https://hub.docker.com/r/pierceng/pharovm-alpine - https://hub.docker.com/r/pierceng/pharo7-alpine - https://www.samadhiweb.com/blog/2019.07.20.alpine.pharo.minimal.html - https://www.samadhiweb.com/blog/2019.08.11.minimizing.pharo.html
Nice! It works with latest minimal 7.0.4 too. BTW you used .sources whith seem to be for Pharo 7 (Pharo7.0-32bit-0903ade.sources), but when I tried with latest stable minimal and for some reason requires the V60 sources: $ docker run --rm --ulimit rtprio=2 pharo7_docker_alpine printVersion Pharo cannot locate the sources file named /pkg/image/PharoV60.sources. I found also another approach using rtprio=2:2 suggested from https://github.com/ba-st/docker-pharo/blob/master/docs/rtprio.md (soft:hard ulimits). The Alpine-based VM can be made smaller by removing unused/irrelevant
modules.
Image-wise, currently I am using Pharo 7 minimal, which is just under 30MB, and that forms the lower bound of the Pharo image size.
The built image here is aprox. 99 Mbytes REPOSITORY TAG IMAGE ID CREATED SIZE pharo7_docker_alpine latest 595b9ece2625 3 hours ago 99.4MB but I think you didn't sumed the .sources.
However there is also the Pharo Candle effort that aims to make really small images, which I hope to try out soon.
I am also interested in which stage you use to install packages into the image, and why? Do you copy the contained image into docker already built?
For Pharo, I start with the regular or minimal image, then load my packages.
For Docker, I first build a container image for the VM only. Using that I build a new container image from the Pharo image and other required files.
Thank you for sharing Pierce. Hernán